Hair dryer



1. Hair dryer

1.1 is a front top perspective view of the design; 1.2 is a rear top perspective view thereof; 1.3 is a left view thereof; 1.4 is a right view thereof; 1.5 is a top view thereof; 1.6 is a front view thereof; 1.7 is a rear view thereof; the portions shown in broken lines are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a hair dryer, as shown and described. 